Looks interesting. Nice design, but I think i could lathe cut one from aluminium round bar, drill and tap the center to 1/4x20, and use a flathead elevator bolt for a couple of bucks in material, and a half hour in time.
I'm not saying that it isn't worth $50.00 as a finished shipped product. I'm saying I could fabricate something very close, rather easily. (With access to a lathe)
Good luck with this project sir. I hope you do well with it.


An unemployed Jester, is nobody's Fool.

the only real difference between a good tracker and a bad tracker, is observation. all the same data is present for both. The rest, is understanding what you're seeing.

~Molɔ̀ːn Labé Skýla~